A reviewer asked me to comment on why the REE are enriched in the magnesiocarbonatite relative to the calcite carbonatite, at Ngualla, Tanzania. My reading around the subject of REE and carbonatites suggest that REE are more concentrated in magnesiocarbonatites and ferrocarbonatites relative to calcite carbonatites, globally; not just at Ngualla. And yet, I have never read an explanation for this association. Can anybody point me in the right direction, please?
Please have a look at a recent article by Jaroslav Dostal in the online journal Resources. Here is the reference:
Dostal J (2017) Rare earth element deposits of alkaline igneous rocks. Resources 34: doi:10.3390/resources6030034
Many thanks Wally. I remember you from the Key Center when I was a student. Best wishes Daniel
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